反应详情

A stirred solution of tert-butyl((2S)-4-methyl-1-((5-(trifluoromethyl)-5H-chromeno[3,4-c]pyridin-8-yl)oxy)pentan-2-yl)carbamate (50 mg, 0.107 mmol) and NCS (14.31 mg, 0.107 mmol) in acetonitrile (12 mL) was heated to 60° C. under nitrogen atmosphere for 12 h. The solvent was removed under reduced pressure. The residue was partitioned between water (15 mL) and DCM (15 mL). The organic layer was separated, dried over sodium sulphate and concentrated under reduced pressure to yield tert-butyl((2S)-1-((9-chloro-5-(trifluoromethyl)-5H-chromeno[3,4-c]pyridin-8-yl)oxy)-4-methylpentan-2-yl)carbamate (51 mg, 0.092 mmol, 86% yield) as a yellow solid. LCMS (ESI) m/e 501.2 [(M+H)+, calcd for C24H29ClF3N2O4 501.2]; LC/MS retention time (Method D): tR=2.02 min.

1. customThe solvent was removed under reduced pressure
2. customThe residue was partitioned between water (15 mL) and DCM (15 mL)
3. customThe organic layer was separated
4. dry with materialdried over sodium sulphate
5. concentrationconcentrated under reduced pressure